01555189

Component

Cement stabilized material, obtained by blending cement, water and soil or aggregate, forms a durable hardened material that can be attractive for pavement construction. On the basis of literature studies, traditional cement stabilized materials have been extensively investigated. However, limited research has been conducted on cement stabilized materials containing a non-traditional additive. This paper investigates the effect of a synthetic modified-zeolite additive on the mechanical properties of cement stabilized sand material and to obtain the estimation models to predict the mechanical strength. A test program including compression and indirect tension tests were performed on a variety of mixtures by varying cement and additive contents cured at different ages. Based on the test results, the effect of the cement and additive contents on the compressive and indirect tensile strength was analysed. Estimation models were developed to predict these two properties, based on the combined effect of cement content, additive content, density of the sample and curing age under laboratory conditions. The obtained estimation models show a good fit for the test data. This type of additive shows positive influence on the mechanical strength of cement stabilized sand materials. To explain the observed change in mechanical strength, the microstructure was further evaluated on cement stabilized sand samples with and without additive by using the Scanning Electron Microscope (SEM).

This paper was sponsored by TRB committee AFS90 Chemical, Mechanical, and Asphalt Stabilization.

01550057

15-4516

English

16p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; References; Tables

Cement; Cement additives; Compression tests; Mathematical prediction; Mechanical properties; Stabilized materials; Strength of materials; Synthetics; Tension tests

Cement stabilized base; Zeolite

Highways; Materials; I33: Other Materials used in Pavement Layers

Transportation Research Board Annual Meeting 2015 Paper #15-4516

TRIS, TRB, ATRI

Dec 30 2014 1:29PM